Two new stygobiotic species of Horatia Bourguignat, 1887 (Hydrobiidae) from Croatia

By

Falniowski, Andrzej
Grego, Jozef
Rysiewska, Aleksandra
Osikowski, Artur
Hofman, Sebastian

Type

Article

Date of Publication

2021

Original Publication

Subterranean Biology

Volume

37

Pages

89--104

Subjects

cytochrome oxidase , open coil , Phylogeny , stygobiont gastropod , sympatry

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/subtbiol.37.61573

 

Abstract

In this paper we describe two new species of the freshwater snails of genusHoratia. A new stygobiotic species ofHoratiaBourguignat, 1887 is described from Izvor Beguša in Croatia. It occurs in sympatry with the crenobioticH. klecakianaBourguignat, 1887, but is morphologically and molecularly distinct. It is characterized by the terminal part of the body whorl separated from the columella, and neither eyes nor any pigment on the soft parts. It is a stygobiont gastropod, known so far only from one living specimen and several empty shells, thus its soft part morphology and anatomy remain unknown. Another new species of stygobioticHoratiawas found inside the cave Mali Rumin, its description is based solely on numerous empty shells from the cave sediments.